/* FYH Peptides — Product detail page styles
   Used by every /products/<slug>.html generated by scripts/build-product-pages.js */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --green-900: #14532d;
  --green-800: #166534;
  --green-700: #1B6B3A;
  --green-600: #16a34a;
  --green-500: #22c55e;
  --green-100: #dcfce7;
  --green-50:  #f0fdf4;
  --warm-50:  #FDFCFA;
  --warm-100: #F8F6F1;
  --warm-200: #F0EDE6;
  --zinc-900: #18181b;
  --zinc-800: #27272a;
  --zinc-700: #3f3f46;
  --zinc-600: #52525b;
  --zinc-500: #71717a;
  --zinc-400: #a1a1aa;
  --zinc-300: #d4d4d8;
  --zinc-200: #e4e4e7;
  --red-600:  #dc2626;
  --red-50:   #fef2f2;
  --font-sans: 'Outfit', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius-sm: 0.75rem;
  --radius-md: 1.25rem;
  --radius-lg: 2rem;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 8px 24px -8px rgba(0,0,0,0.06);
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--warm-50);
  color: var(--zinc-800);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 clamp(1rem, 4vw, 2.5rem); }

/* Header */
.site-header {
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--warm-200);
  background: rgba(253, 252, 250, 0.85);
  backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 50;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.logo { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; }
.logo-mark { width: 40px; height: 40px; }
.logo-text { font-size: 1.2rem; font-weight: 700; letter-spacing: -0.03em; color: var(--green-900); }
.logo-text span {
  font-weight: 400; color: var(--zinc-500); font-size: 0.72rem;
  display: block; letter-spacing: 0.08em; text-transform: uppercase; margin-top: -2px;
}
.nav-links { display: flex; align-items: center; gap: 0.25rem; list-style: none; }
.nav-links a {
  display: block; padding: 0.5rem 1rem; font-size: 0.9rem; font-weight: 500;
  color: var(--zinc-600); text-decoration: none; border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--green-800); background: var(--green-50); }

/* Breadcrumb */
.breadcrumb { padding: 1rem 0 0.5rem; font-size: 0.82rem; color: var(--zinc-500); }
.breadcrumb a { color: var(--zinc-600); text-decoration: none; }
.breadcrumb a:hover { color: var(--green-800); }
.breadcrumb-sep { margin: 0 0.4rem; color: var(--zinc-400); }

/* Product detail */
.product-detail {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  padding: 1.5rem 0 4rem;
  align-items: start;
}
.pd-image-wrap {
  position: relative;
  background: linear-gradient(135deg, var(--green-50), var(--warm-100));
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--warm-200);
}
.pd-image-wrap img { width: 100%; height: 100%; object-fit: cover; display: block; }
.pd-badge-coa {
  position: absolute; top: 1rem; right: 1rem;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  padding: 0.5rem 0.8rem;
  border-radius: 100px;
  font-size: 0.72rem; font-weight: 600;
  display: flex; align-items: center; gap: 0.4rem;
  color: var(--green-800);
  border: 1px solid rgba(22, 101, 52, 0.12);
}
.pd-badge-coa svg { width: 14px; height: 14px; }

.pd-info { padding-top: 0.5rem; }
.pd-cat-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed var(--warm-200);
}
.pd-category {
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--green-700);
}
.pd-catalog {
  font-size: 0.72rem; color: var(--zinc-500); letter-spacing: 0.04em;
}
.pd-catalog .mono {
  color: var(--zinc-900); font-weight: 600;
}
.mono { font-family: var(--font-mono); }
.pd-name {
  font-size: clamp(2rem, 4.5vw, 3rem); font-weight: 700;
  letter-spacing: -0.03em; color: var(--zinc-900);
  line-height: 1.1; margin-bottom: 0.5rem;
}
.pd-size { font-family: var(--font-mono); font-size: 1rem; color: var(--zinc-600); margin-bottom: 1.5rem; }
.pd-price-row {
  display: flex; align-items: baseline; gap: 0.5rem;
  margin-bottom: 1.5rem; padding: 1rem 0;
  border-top: 1px solid var(--warm-200);
  border-bottom: 1px solid var(--warm-200);
}
.pd-price { font-size: 2rem; font-weight: 700; color: var(--zinc-900); letter-spacing: -0.02em; }
.pd-price-currency { font-size: 0.85rem; color: var(--zinc-500); font-weight: 500; }
.pd-section-title {
  font-size: 0.78rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--green-700);
  font-weight: 700; margin-top: 1.75rem; margin-bottom: 0.75rem;
}
.pd-specs {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 0.85rem 1.5rem;
  margin: 0 0 1rem;
  padding: 1rem 1.25rem;
  background: var(--warm-100);
  border: 1px solid var(--warm-200);
  border-radius: 1rem;
}
.pd-spec { padding: 0.35rem 0; }
.pd-sequence-block {
  margin: 1rem 0 1.5rem;
  padding: 0.85rem 1.1rem;
  background: var(--warm-50);
  border-left: 3px solid var(--green-700);
  border-radius: 0.5rem;
}
.pd-sequence {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--zinc-800);
  word-break: break-all;
  white-space: pre-wrap;
  margin-top: 0.25rem;
  line-height: 1.5;
}
.pd-spec-label {
  font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--zinc-500); margin-bottom: 0.2rem;
}
.pd-spec-value { font-size: 0.95rem; font-weight: 600; color: var(--zinc-900); }
.pd-desc { color: var(--zinc-700); margin: 1rem 0 1.5rem; line-height: 1.7; }
.pd-cta-row { display: flex; flex-direction: column; gap: 0.75rem; margin-top: 1.5rem; }

/* Inline COA image */
.pd-coa-image-link {
  display: block;
  margin: 0.5rem 0 1.25rem;
  text-decoration: none;
  position: relative;
}
.pd-coa-image {
  display: block;
  width: 100%;
  height: auto;
  max-width: 360px;
  border: 1px solid var(--warm-200);
  border-radius: 0.85rem;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 8px 24px -8px rgba(0,0,0,0.08);
  transition: transform 0.2s, box-shadow 0.2s;
}
.pd-coa-image-link:hover .pd-coa-image {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.06), 0 16px 40px -12px rgba(0,0,0,0.12);
}
.pd-coa-zoom-hint {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.78rem;
  color: var(--zinc-500);
  text-align: center;
}
.pd-coa-missing {
  margin: 0.5rem 0 1.25rem;
  padding: 1rem 1.25rem;
  background: var(--warm-100);
  border-left: 3px solid var(--zinc-300);
  border-radius: 0.5rem;
  font-size: 0.9rem;
  color: var(--zinc-700);
}
.pd-coa-missing a { color: var(--green-800); }

.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
  width: 100%;
  padding: 1.15rem 2rem;
  background: linear-gradient(180deg, var(--green-700), var(--green-800));
  color: #fff; text-decoration: none;
  border-radius: 100px; font-size: 1.05rem; font-weight: 600;
  letter-spacing: -0.01em;
  border: none; cursor: pointer;
  box-shadow: 0 4px 14px -4px rgba(22,101,52,0.35);
  transition: transform 0.2s, box-shadow 0.2s, filter 0.2s;
}
.btn-primary:hover { filter: brightness(1.05); transform: translateY(-2px); box-shadow: 0 10px 28px -6px rgba(22,101,52,0.4); }
.btn-primary:active { transform: translateY(0); }
.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.9rem 1.5rem;
  background: transparent; color: var(--zinc-700); text-decoration: none;
  border-radius: 100px; font-size: 0.95rem; font-weight: 500;
  border: 1.5px solid var(--zinc-200);
  transition: border-color 0.2s, color 0.2s;
}
.btn-secondary:hover { border-color: var(--green-700); color: var(--green-800); }

.ruo-banner {
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  background: var(--red-50);
  border-left: 4px solid var(--red-600);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--zinc-800);
}
.ruo-banner strong { color: var(--red-600); font-weight: 700; }

/* Published Research — citations from PubMed */
.pd-citations-block {
  margin: 0.5rem 0 1.5rem;
  padding: 1.25rem 1.5rem;
  background: var(--warm-100);
  border: 1px solid var(--warm-200);
  border-radius: 1rem;
}
.pd-citations-note {
  font-size: 0.82rem;
  color: var(--zinc-600);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px dashed var(--warm-200);
}
.pd-citations-note a {
  color: var(--green-800);
  text-decoration: none;
  font-weight: 600;
}
.pd-citations-note a:hover { text-decoration: underline; }
.pd-citations-updated {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--zinc-500);
}
.pd-citations-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.pd-citation {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--warm-200);
}
.pd-citation:last-child { border-bottom: none; }
.pd-citation-meta {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
}
.pd-citation-num {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--zinc-500);
  font-weight: 600;
  padding-top: 0.1rem;
  min-width: 1.6rem;
}
.pd-citation-body {
  flex: 1;
  min-width: 0;
}
.pd-citation-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--zinc-900);
  line-height: 1.45;
  margin-bottom: 0.3rem;
}
.pd-citation-authors {
  font-size: 0.8rem;
  color: var(--zinc-700);
  margin-bottom: 0.2rem;
  line-height: 1.5;
}
.pd-citation-source {
  font-size: 0.78rem;
  color: var(--zinc-600);
  margin-bottom: 0.5rem;
}
.pd-citation-source em {
  color: var(--zinc-700);
  font-style: italic;
}
.pd-citation-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.75rem;
  align-items: center;
  font-size: 0.75rem;
}
.pd-citation-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.6rem;
  background: #fff;
  color: var(--green-800);
  border: 1px solid var(--warm-200);
  border-radius: 100px;
  font-weight: 600;
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.pd-citation-link:hover {
  border-color: var(--green-700);
  background: var(--green-50);
}
.pd-citation-link svg { opacity: 0.65; }
.pd-citation-pmid {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--zinc-500);
  letter-spacing: 0.02em;
}

.site-footer { background: var(--zinc-900); color: var(--zinc-400); padding: 3rem 0 2rem; margin-top: 4rem; }
.footer-inner { display: flex; flex-direction: column; gap: 1.5rem; text-align: center; }
.footer-disclaimer {
  font-size: 0.78rem; padding: 1rem 1.5rem;
  background: rgba(220, 38, 38, 0.08);
  border: 1px solid rgba(220, 38, 38, 0.15);
  border-radius: var(--radius-sm); color: #fca5a5;
}
.footer-links {
  font-size: 0.85rem;
  display: flex; flex-wrap: wrap; gap: 0.5rem 0.85rem;
  justify-content: center;
  padding: 0.25rem 0;
}
.footer-links a { color: var(--zinc-300); text-decoration: none; }
.footer-links a:hover { color: var(--green-500); }
.footer-bottom {
  font-size: 0.8rem; color: var(--zinc-500);
  padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-bottom a { color: var(--zinc-400); text-decoration: none; }
.footer-bottom a:hover { color: var(--green-500); }

/* Mobile sticky inquiry bar — product pages only */
.pd-mobile-cta {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 60;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
  padding-bottom: calc(0.75rem + env(safe-area-inset-bottom, 0px));
  background: rgba(253, 252, 250, 0.96);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--warm-200);
  box-shadow: 0 -4px 20px -6px rgba(0,0,0,0.1);
}
.pd-mobile-cta-price {
  display: flex; flex-direction: column; line-height: 1.1;
}
.pd-mobile-cta-price .amt { font-size: 1.25rem; font-weight: 700; color: var(--zinc-900); }
.pd-mobile-cta-price .lbl { font-size: 0.68rem; color: var(--zinc-500); }
.pd-mobile-cta .btn-primary {
  width: auto;
  flex: 1;
  max-width: 60%;
  padding: 0.9rem 1.5rem;
  font-size: 0.95rem;
}

@media (max-width: 768px) {
  .product-detail { grid-template-columns: 1fr; }
  .pd-specs { grid-template-columns: 1fr; }
  /* COA thumbnail half-size on mobile (tap to open full-res) */
  .pd-coa-image { max-width: 180px; }
  /* keep nav reachable on mobile — compact wrapping row instead of hidden */
  .nav-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.1rem;
  }
  .nav-links a { padding: 0.4rem 0.6rem; font-size: 0.82rem; }
  .header-inner { gap: 0.75rem; flex-wrap: wrap; }
  /* show sticky CTA + give page bottom padding so it doesn't cover content */
  body.has-mobile-cta .pd-mobile-cta { display: flex; }
  body.has-mobile-cta { padding-bottom: 5rem; }
}